Potato Soup

4 c peeled & sliced potatoes
1 onion, chopped
3 TBS butter
1 1/2 c chicken broth
1 tsp salt
bacon or ham, chopped
Cheese

Cook potatoes and onion in water for 15 minutes. Drain, reserving 1 1/2 c of the water.
Return potatoes and onions to pot and mash with fork. Add butter, leftover water, broth and salt.
Cook until heated through. Add ham or bacon and cheese.